diff options
| author | Colin Ian King <colin.king@canonical.com> | 2020-07-16 16:47:20 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-17 12:08:44 +0200 |
| commit | c4283950a9a4d3bf4a3f362e406c80ab14f10714 (patch) | |
| tree | cf23aad48398a0e8f59165c73801255b13d75f30 | |
| parent | f6b35db072dcf25365972503ade853960da5c984 (diff) | |
staging: rtl8192u: fix a dubious looking mask before a shift
Currently the masking of ret with 0xff and followed by a right shift
of 8 bits always leaves a zero result. It appears the mask of 0xff
is incorrect and should be 0xff00, but I don't have the hardware to
test this. Fix this to mask the upper 8 bits before shifting.
[ Not tested ]
Addresses-Coverity: ("Operands don't affect result")
Fixes: 8fc8598e61f6 ("Staging: Added Realtek rtl8192u driver to staging")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20200716154720.1710252-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/rtl8192u/r8192U_core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c index fcfb9024a83f..6ec65187bef9 100644 --- a/drivers/staging/rtl8192u/r8192U_core.c +++ b/drivers/staging/rtl8192u/r8192U_core.c @@ -2374,7 +2374,7 @@ static int rtl8192_read_eeprom_info(struct net_device *dev) ret = eprom_read(dev, (EEPROM_TX_PW_INDEX_CCK >> 1)); if (ret < 0) return ret; - priv->EEPROMTxPowerLevelCCK = ((u16)ret & 0xff) >> 8; + priv->EEPROMTxPowerLevelCCK = ((u16)ret & 0xff00) >> 8; } else priv->EEPROMTxPowerLevelCCK = 0x10; RT_TRACE(COMP_EPROM, "CCK Tx Power Levl: 0x%02x\n", priv->EEPROMTxPowerLevelCCK); |